Don't tell them that you have offered services for an ADULT website. They will see that you promote the adult on the web and they don't like that. Tell them that you don't know about that payment or something. Play with their minds?
Do you know how I've got 500$ back from a scam? I've sent them an email and I've told them that I was on vacation and I don't know who made that payment, after a few days the money were back. (maybe I was lucky)
But what I'm trying to say is you still can get your account back. Just try different methods, you don't have anything else to lose.